Song Ji Hyo is a 19 years old high school student. She's a long haired girl who has a younger brother named Song Joong Ki. Joong Ki's schoolmates such as Jung Yong Hwa,Exo,Kim Dong Jun and Hong Bin likes Ji Hyo very much due to her friendly smile and her easy going attitude. All of them regard her as their own Noona. Song Ji Hyo work as a waitress for her part time job at her older brother,